=========================================================================== $NetBSD: MESSAGE.NetBSD,v 1.2 2020/06/19 13:06:35 nia Exp $ With the Qt UI (mgba-qt), the OpenGL video driver seems to cause frame drops below 60FPS on certain hardware. The SDL UI (mgba) seems to be solid. You might want to change the audio sample rate (in mGBA's settings) to the native rate of the device (usually 48000 Hz, or a multiple). NetBSD 9.0's default audio latency of 4-10ms seems good enough. If yours is set to any higher, sysctl hw.audio0.blk_ms might need to be lowered for full performance and framerates. ===========================================================================